package com.zty.concurrency.example.atomic;

import com.zty.concurrency.annoations.NotThreadSafe;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.LongAdder;

@NotThreadSafe
@Slf4j
public class AtomicExample3 {
    // 请求总数
    public static int clientTotal=5000;
    // 同时并发执行的线程数
    public static int threadTotal = 200;

   public static LongAdder count= new LongAdder();
    public static void main(String[] args) throws Exception {
        ExecutorService executorService = Executors.newCachedThreadPool();
        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientTotal);
        for (int i = 0; i <clientTotal ; i++) {
            executorService.execute(()->{
                try {
                    semaphore.acquire();
                    add();
                    semaphore.release();;
                } catch (Exception e) {
                    log.error("exception",e);
                }
                countDownLatch.countDown();
            });
        }
        countDownLatch.await();;
        executorService.shutdown();
        log.info("count:{}"+count);
    }

    private static void add() {
        count.increment();
        //count.incrementAndGet();
    }


}
